"The article is about my experience with Haskell and the process of working with it. I will describe which features of Haskell I used to implement particular aspects of my interpreter, how they're different from the object oriented world, why they helped me get things done faster, and how I had to change my program whenever my initial efforts took me to a dead end. While the jury's still out how well Haskell performs in other domains (I'm just starting my web application project) I hope this article sparks your interest in this beautiful language and explains some things programmers new to Haskell often find confusing."More here.